含电动汽车充电站的新型直流配电网研究  

Study on a New Type of DC Distribution Network Containing Electric Vehicle Charge Station

作　　者：朱克平[1] 江道灼[1] 胡鹏飞[1] 

机构地区：[1]浙江大学电气工程学院,浙江省杭州市310027

出　　处：《电网技术》2012年第10期35-41,共7页Power System Technology

摘　　要：提出了一种含电动汽车充电站的新型直流配电网。根据光伏电池、固体燃料电池、风机3种分布式发电单元的物理特性进行仿真建模,并设计了简单可靠的并网方式,极大降低了分布式发电并网的费用。将电动汽车充电站作为直流配电网的平衡节点与交流配电网相连,利用其中的换流装置和蓄电池组实现了能量互换,节省了储能装置的投资。设计了交流与直流隔离器,使交直流同线馈送成为可能,节省了输电线路投资建设的费用。提出了基于这种新型直流配电网的3层控制方法。PSCAD/EMTDC仿真验证了该系统的可行性,表明该控制方法能够保证系统可靠供电和最大限度地利用分布式发电,便于能量交互,实现经济最优调度。A new type of dc distribution network containing electric vehicle（EV） charge station is proposed.Based on physical features of three distributed generation units,namely photovoltaic（PV） cell,solid fuel cell and wind power generator,the grid-connected models of them are built,and simple and reliable grid-connection mode is designed,thus the cost for grid-connection of distributed generation（DG） is evidently reduced.The EV charge station,which is taken as a balanced node in DC distribution network,is connected to power grid,and the energy interchange is implemented by converter devices and storage battery in charge station,and the cost for the investment and construction of energy storage devices can be saved.A three-layer control method for such a new type of DC distribution network is put forward.The feasibility of the proposed system is verified by results of PSCAD/EMTDC-based simulation,and it is also shown that the proposed control method can ensure reliable power supply for the charge system and uttermost utilization of DG,and it is convenient for energy interaction and implementation of optimal economic dispatching.

关 键 词：分布式发电 直流配电网 交直流同线馈送 电动汽车充电站 3层控制方法 PSCAD/EMTDC 

分 类 号：TM91[电气工程—电力电子与电力传动] U469[机械工程—车辆工程]